Road-grader



(No Model.)

M. H. WALWORTH.

ROAD GRADER.

No. 410,388. I Patented Sept. 3, 1889.

WITNESSES:

" ATTORNEYS.

UNITED STATES PATENT OFFICE.

MERRITT H. \VALNVORTH, )F HILLSDALE, MICHIGAN.

ROAD-GRADER.

SPECIFICATION forming part of Letters Patent N 0. 410,388, datedSeptember 3, 1889.

Application filed June 15, 1889- Serial No. 314,362. (No model.)

To aZZ 1071/0722. it 72mg concern:

Be it known that I, MERRITT H. -WAL- WORTH, of Ilillsdale, in the countyof Hillsdale and State of Michigan, have invented a new and usefulImprovement in Road-Graders, of which the following is a full, clear,and exact description.

My invention relates to an improvement in road-graders of that class inwhich the scraper is supported beneath a frame mounted upon wheels, andwherein the scraper is capable of vertical and lateral adjustment tothrow the earth either to the right or to the left.

The object of the invention is to simplify the construction of theadjustable scraper- V supporting frame and provide a means whereby asingle ring may be employed in connection with the said frame of light,durable, and economic construction.

The invention consists in the novel con struction and combination of theseveral parts, as will be hereinafter fully set forth, and pointed outin the claims.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar letters and figures of referenceindicate corresponding parts in all the views.

Figure 1 is a side elevation of my improvement applied to a scraper andsupported from a suitable frame. Fig. 2 is a plan view of theimprovement detached; and Figs. 3 and 4are sections taken, respectively,on the lines 3 3 and 4 at in Fig. 2, illustrating different ways ofsupporting the ring in position.

In carrying out the invention I have illustrated the scraper-supportingframe as attached to a vehicle constructed in similar manner to thevehicle described and illustrated in Letters Patent granted to S. F.VVelch, March 13, 1888, No. 379,550, and I have also illustrated inconnection with the said frame the same mechanism for laterally andvertically adjusting the frame as set forth in the patent above referredto.

I desire it to be understood that the adj usting mechanism constitutesno portion of the invention, as any mechanism the equivalent of thatillustrated may be employed.

My invention consists in providing a single ring 10, having a portion ofits inner periphery toothed, as shown at 11, and from the under side ofthe said ring arms 12 are downwardly curved to an attachment with thetransversely-curved scraper-blade 13, as illustrated in Fig. 1. The twobars or members A and A of a bifurcated draw bar or beam 14 are made toextend over the upper surface of the ring, and the forward end of thesaid draw-bar, which is upwardly curved, as illustrated at 15 in Fig. 1,is provided with an eye 16, whereby the said draw-bar is pivoted to theforward axle of the vehicle or to the tongue thereof, as illustrated at17 in Fig. 1. To the under face of the said membersA and A of thedraw-bar a transverse bar or beam 18 is rigidly secured by means ofbolts, as illustrated, or by equivalent fastening devices.

The outer ends of the members of the drawbar are connected by across-bar 20,havinga groove or slot produced in its forward end, inwhich groove or slot the ring 10 is adapted to move. The ring 10 isfurther supported by means of brackets 21, bolted. to the under side ofthe draw-bar and the transverse supporting-beam 18, the brackets beingsecured to the under face of the several beams in such manner that a lip22 will extend a distance under the ring, and the outer peripheralsurface of the ring will contact with the bracket to a greater or lessextent, as illustrated in Fig. 3.

Another form of bracket is illustrated in Fig. 4, which is particularlyadapted to contact with the inner peripheral surface of the ring tosupport the same from the inner side. This bracket consists of an angledbar 23, one member whereof is parallel with the supporting-beam, towhich it is attached, and through the beam and this parallel member ofthe bracket a bolt, stud, or pin 24 is projected, carrying afriction-roller 25, adapted for 0011- tact with the inner peripheralsurface of the ring. The horizontal member of the bracket issufficiently long to extend a distance beneath the ring to support thesame as it is revolved. The friction-rollers assist in a measure in therevolution of the ring.

I desire it to be understood that either form of bracket may beemployed, or both forms may be used at the same time, if desired, inwhich latter event one of the brackets shown in Fig. 3 and one of theform illustrated in Fig. 4 are attached to the draw-bar in such mannerthat one bracket will contact with the outer peripheral surface of thering and the other with the inner peripheral surface of the same. Thering is revolved to throw the scraper 13 in different diagonal positionsbeneath the vehicle by a pinion 26, meshing with the inner toothedsurface of the ring, which pinion is secured to a shaft 27, journaled insuitable bearings and carried upward preferably beyond the top of thebody of the vehicle, and provided at its upper end with an attachedhand-wheel 28, whereby the pinion is readily and conveniently rotated.

It will be observed that but a single ring is employed to support andcarry the scraper, and that the said ring is supported by a series ofshort brackets arranged at intervals, thus providing a simple and light,yet economical and strong, bearing or guideway for the ring.

If in practice it is found desirable, two or more cross or supportingbars may be attached to the draw-bar. Ordinarily, however, one issufficient.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A support for the scrapers of road-graders,consisting of a bifurcated draw-bar, one or more supporting-beamsattached to the members of the draw-bar, brackets secured to the undersurfaceof each of the said beams, and a ring supported by the saidbrackets, substantially as shown and described.

2. In a support for the scrapers of roadgraders, the combination, with abifurcated draw-bar, one or more beams projected from the members of thesaid draw-bar, and brackets attached to the under side of each beam, ofa ring support-ed by the said brackets and held to turn thereon,substantially as shown and described.

3. In a support for the scrapers of roadgraders, the combination, with abifurcated draw-bar, a beam or beams extending from the members of thesaid draw-bar, and brackets attached to the under face of each beam, ofa ring provided with an inner toothed peripheral surface supported bythe said brackets and held to turn thereon, curved arms projected fromthe under face of the ring, and a scraper-blade attached to the saidarms, and means, substantially as shown and described, for turning thering in its bearings, as and for the purpose specified.

MERRITT H, WALWORTH. Witnesses:

M. MCINTYRE, M. L..RUssELL.

